Mathematics teaching aid



FIG. 1 is a top, front and left side perspective view of a mathematicsteaching aid showing my new design;

FIG. 2 is an enlarged fragmentary front elevational view thereof, shownwith the transparent cover removed and illustrating the indicia which isomitted from FIGS. 1, 3 and 5 for ease of illustration;

FIG. 3 is a top, front and left side perspective view thereof, shownwith the cover pivoted rearwardly;

FIG. 4 is a left side elevational view thereof, the right side being amirror image;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a reduced scale bottom plan view thereof;

FIG. 9 is a reduced scale left side elevational view thereof, shown withthe cover pivoted rearwardly;

FIG. 10 is a reduced scale left side elevational view thereof, shownwith the cover removed;

FIG. 11 is a front elevational view thereof, shown with the cover andbars removed for clarity of illustration;

FIG. 12 is a rear elevational view thereof, shown with the cover andbars removed for clarity of illustration; and

FIG. 13 is a top plan view thereof, shown with the cover and barsremoved for clarity of illustration.

The ornamental design for mathematics teaching aid, as shown anddescribed.